(set-logic QF_NIA)(set-option :produce-models true) (declare-fun P () Int) (declare-fun Q () Int) (declare-fun R () Int) (declare-fun S () Int) (assert (and (< 0 P) (<= 0 Q) (< 0 R) (<= 0 S))) (assert (> (+ (* P S) Q) (+ (* R Q) S))) (check-sat)(get-value (P Q R S))